About: http://webisa.webdatacommons.org/374241537

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	X: H, Cl, Br, I, NH.sub.2, SCN, CN, N.sub.3.sup.-, NHR, NR.sub.2, NR.sub.3, --S.sub.x --, aryl, alkenyl, especially H, Cl, where R has the same definition as R.sub.3, set forth above,
http://www.w3.org/ns/prov#wasQuotedFrom	patents.com